Alexander max tippner



R E N P P I T M A a d 0 M 0 m FASTENING FOR THE COVERS 0P IGE GISIERNS,No. 511,475.

Pa tentdflDed. 26, 1893.

Inn/anti:

Wb'i'nnsem UNITE J STAT-ES PATENT OFFICE.

ALEXANDER MAX TIPPNER, OF DRES DEN, GERMANY.

FASTENING FOR THE COVERS OF ICE-CISTERNS.

SPECIFICATION forming part of Letters Patent No. 511,475, dated December26, 1893. Application filed February 20, 1893- serial No. 462,978- (Nomodel.) Patented in Germany June 2, 1892, No. 66,553-

T ctZZ whom it may-concern Be it known that LALEXANDER MAX TIPP- "NER,asubject of the King of Saxony, German,

Empire, and a resident of Dresden, in the Kingdom of Saxony, GermanEmpire, have invented a certain new and useful Fastening for the Coversof Ice-Cisterns, of which the following is a specification, a patent forthe same having been granted to me in Germany on the 2.6. day of June,1892, numbered and designated as follows: D. R. P., 66,553, Kl. 34.

In order that ice may be fully utilized for cooling purposes it isimperative that it be kept from contact with the outside air; or atleast such contact should be reduced to the lowest possible minimum ifthe efiect required is not to be lost altogether. The fastenings usuallyemployed in cistern covers are defective in this respect, since theyonlyrestrictthe volume of the air current but do not prevent its comingin contact with the ice.

The object ofthe present invention is to provide a fastening which willbe at once easy of handling and eifect a hermetic closing of the cover.

Referring to the drawings which accompany the specification to aid thedescription, Figure 1 is a plan view of the lock cover. Fig. 2 is alongitudinal section of the fastening, taken on the line wa: of Fig. 1.Fig. 3 is a cross section of same, on the liney-y of Fig. 1.

The cistern may be made of any suitable material preferably of sheetiron. The top b of the cistern has an opening for receiving the icewhich is closed by a cover a, as shown, the edges of the opening and thecover each fitting on each other, while the opening in the top of thecistern is quite snugly filled by the downward projecting part of thecover a, as shown in Fig. 2. A cross piece or beam 0 which projects atright angles over the cover- 0. turns on a bolt 0 in a horizontal planeand grips in one ofits ends. Said bolt 0, is fastened on the uppersurface of the ice cistern near the feed opening, a cramp at being alsofastened near same, but on the opposite side, and in which the end ofthe lever c'catches,

when the same enters in the closing position. A spiral spring e isfitted in a socket bored outfor the purpose in the middle of the covera. Over this lies a bow-formed rail f, which is raised high enough bythe spring 6, when the cover is free, to project sufiiciently in thecenter above the surface of the cover to serve 5 5 for a handle. Thebow-form of this rail f forms the course for the beam c when same isreciprocated over the cover on opening or closing the latter. The momentthe beam 0 comes in contact with the rail f, the latter is pressed down,thus gradually compressing the springe; said spring then presses thecover a down upon the feed opening. Packing h, such as india rubber orthe like is placed between the'closing surfaces. 7

' I am aware that compressing and retaining devices have already beenmade with bodies having arched or convex tops, also with lids having anarched top, and that spring fastenings for the same are not new; finallyI am aware that abridge of spring steel is already used to exertsufficient pressure to hold the parts of a coverin place, when engaged.For these reasons I do not claim these devices separately or broadly incombination, but

What I do claim, and desire to secure by Letters Patent, is

1. In fastenings for covers of ice receptacles, a cross piece or beamturning on a fixed bolt as a pivot, a' rail adapted to be compressedthereby, a spring upholding saidrail, and'a'cramp adapted to catch andhold down the beam upon said rail, when the beam is extended over thecover, substantially as de scribed. g

' 2. The combination in ice receptacles, of the top b, coverctadapted tofit therein and closethe opening therein, arm 0 pivoted on saidtop,cramp d fixed on said top b and adapted to receive said arm cwhen inone position, 0 spring 6 fixed on said cover, and supporting the coursef which is adapted to press upward.

against said pivoted arm 0 and thereby hold the cover a tightly inplace, substantially as described. 7

3. The combination in ice receptacles, of a c a r 511,475

perforated top, a packing ring adjacent to the said arm is engaged bysaid cramp, substanperforation, a cover for the perforation and tiallyas described. I0 provided with a flange adapted to bear on said Inwitness whereof I hereunto set my hand packing ring, an arm pivoted onthe cover and in presence of two Witnesses.

5 adapted to pass under a cramp which is fixed ALEXANDER MAX TIPPNER.

on the top of the receptacle, a spring arranged \Vitnesses: on theaforesaid top and carrying an elastic OSKAR ZODUR,

course on which the aforesaid arm hears when HERNANDO DE SOTO.

